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Finding the Fourth Proportional to 119.90, 179.82 and 42.93

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Solution

The fourth proportional to 119.90, 179.82 and 42.93 is: 64.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    119.90 : 179.82 = 42.93 : x
  2. Step 2: Convert to fraction form
    119.90/179.82 = 42.93/x
  3. Step 3: Cross multiply
    119.90x = 179.82 × 42.93
  4. Step 4: Simplify right side
    119.90x = 7,719.67
  5. Step 5: Solve for x
    x = 7,719.67/119.90
  6. Step 6: Final answer
    x = 64.38

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